Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2024, 12:21

General

  • Target
    6464622f1a4e21e64aaa3fdc66a19f0a.exe
  • Size 14.5MB
  • Sample241002-pja1hawall
  • SHA256 216a89d7b6ed72c94dedb03eff7dfc83245c3aadb99e76d21c9c722d2fc9fbbc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Credentials
  • Protocol

    ftp

  • Host

    141.8.192.82

  • Port

    21

  • Username

    a0867322

  • Password

    ijnUHB35699

Signatures

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to get system information as a root user.

  • Checks computer location settings 2 TTPs 4 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 23 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Program Files directory 2 IoCs
  • Detects Pyinstaller 1 IoCs
  • Embeds OpenSSL 1 IoCs

    Embeds OpenSSL, may be used to circumvent TLS interception.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6464622f1a4e21e64aaa3fdc66a19f0a.exe
    "C:\Users\Admin\AppData\Local\Temp\6464622f1a4e21e64aaa3fdc66a19f0a.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5100
    • C:\Users\Admin\AppData\Local\Temp\Setup.exe
      "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3816
    • C:\Users\Admin\AppData\Local\Temp\ratteleg.exe
      "C:\Users\Admin\AppData\Local\Temp\ratteleg.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4240
      • C:\Users\Admin\AppData\Local\Temp\ratteleg.exe
        "C:\Users\Admin\AppData\Local\Temp\ratteleg.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:3716
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -Command "Get-CimInstance -Namespace root/SecurityCenter2 -ClassName AntiVirusProduct | Select-Object displayName, productState"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:640
        • C:\Windows\SYSTEM32\attrib.exe
          attrib +h C:\Users\Admin\AppData\Local\Temp\_MEI42402\.opened
          4⤵
          • Views/modifies file attributes
          PID:4400
    • C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe
      "C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3084
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\BlockReviewperfNet\D9qfsusDaKaGzArOrLHu4EOv3ma1v04XoPwcmPU8FAUUvqUzQRtl.vbe"
        3⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2480
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\BlockReviewperfNet\ji7Cdd0H.bat" "
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3632
          • C:\BlockReviewperfNet\MsblockSurrogate.exe
            "C:\BlockReviewperfNet/MsblockSurrogate.exe"
            5⤵
            • Checks computer location settings
            • Executes dropped EXE
            • Drops file in Program Files directory
            • Modifies registry class
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1640
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\mYhF1RjFfY.bat"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:3984
              • C:\Windows\system32\chcp.com
                chcp 65001
                7⤵
                  PID:2636
                • C:\Windows\system32\w32tm.exe
                  w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                  7⤵
                    PID:3912
                  • C:\Program Files\WindowsPowerShell\Registry.exe
                    "C:\Program Files\WindowsPowerShell\Registry.exe"
                    7⤵
                    • Executes dropped EXE
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3988

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            D9qfsusDaKaGzArOrLHu4EOv3ma1v04XoPwcmPU8FAUUvqUzQRtl.vbe

            • Path C:\BlockReviewperfNet\D9qfsusDaKaGzArOrLHu4EOv3ma1v04XoPwcmPU8FAUUvqUzQRtl.vbe
            • Size 205B
            • SHA256 027f4a6045f1ec15cffd652e1d5f7081b79a35bf3d202585c0bce1a8ff06a0be
            • MD5 SHA1 SHA512

            MsblockSurrogate.exe

            • Path C:\BlockReviewperfNet\MsblockSurrogate.exe
            • Size 3.5MB
            • SHA256 b00716e54b7e769d4b9f30a37d2a18572233448146c1a88046bc173c4dc2749f
            • MD5 SHA1 SHA512 SSDEEP

            ji7Cdd0H.bat

            • Path C:\BlockReviewperfNet\ji7Cdd0H.bat
            • Size 84B
            • SHA256 38a0e27a51c2fff42752eca6da50d1135c2dc94faea6dca0c3150278a14f9741
            • MD5 SHA1 SHA512

            DCRatBuild.exe

            • Path C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe
            • Size 3.4MB
            • SHA256 152303c15a390562b72545eceaa127176e17b0c612209c59e8f772d48e099a68
            • MD5 SHA1 SHA512 SSDEEP

            Setup.exe

            • Path C:\Users\Admin\AppData\Local\Temp\Setup.exe
            • Size 399KB
            • SHA256 e8e2207dc3eefdc21c6007a26b0af5f672a4d389b4d78500b246f7adefc13962
            • MD5 SHA1 SHA512 SSDEEP

            .opened

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\.opened
            • Size 6B
            • SHA256 5023662705d96810758a40e018035f9a90b8df6e8250eb522e9ba9e188443ba7
            • MD5 SHA1 SHA512

            VCRUNTIME140.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\VCRUNTIME140.dll
            • Size 91KB
            • SHA256 8ee6b49830436ff3bec9ba89213395427b5535813930489f118721fd3d2d942c
            • MD5 SHA1 SHA512 SSDEEP

            _asyncio.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_asyncio.pyd
            • Size 63KB
            • SHA256 d1f458227ecf60d389145175fa0b61656ecac2fb80d9bb89e04cdf273e67c543
            • MD5 SHA1 SHA512 SSDEEP

            _bz2.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_bz2.pyd
            • Size 84KB
            • SHA256 6c2bbed242c399c4bc9b33268afe538cf1dea494c75c8d0db786030a0dcc4b7e
            • MD5 SHA1 SHA512 SSDEEP

            _cffi_backend.cp39-win_amd64.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_cffi_backend.cp39-win_amd64.pyd
            • Size 177KB
            • SHA256 d112ae33247d896008d79a1a5f96b98d0eaee80d13372e64c2d88ffbd94fadf8
            • MD5 SHA1 SHA512 SSDEEP

            _ctypes.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_ctypes.pyd
            • Size 123KB
            • SHA256 c1e3e9548243ca523f1941990477723f57a1052965fccc8f10c2cfae414a6b8a
            • MD5 SHA1 SHA512 SSDEEP

            _decimal.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_decimal.pyd
            • Size 265KB
            • SHA256 17f43bf9552fcf8194f4b32909beffa4238b76866f7dd50f4b70de799362f66c
            • MD5 SHA1 SHA512 SSDEEP

            _hashlib.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_hashlib.pyd
            • Size 64KB
            • SHA256 8aa7abe0a92a89adf821e4eb783ad254a19858e62d99f80eb5872d81e8b3541c
            • MD5 SHA1 SHA512 SSDEEP

            _lzma.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_lzma.pyd
            • Size 158KB
            • SHA256 ac0ceb8e6b5e67525b136b5ce97500fe4f152061b1bf2783f127eff557b248a3
            • MD5 SHA1 SHA512 SSDEEP

            _multiprocessing.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_multiprocessing.pyd
            • Size 29KB
            • SHA256 ba672c65a51074505796efb52bf343f9d725e90106dacfd4441105d428457cc6
            • MD5 SHA1 SHA512 SSDEEP

            _overlapped.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_overlapped.pyd
            • Size 45KB
            • SHA256 c67bf0303c504f3605a6d4c396a1e30e35b64d1a1e39dd36943d8cc7f69a6097
            • MD5 SHA1 SHA512 SSDEEP

            _queue.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_queue.pyd
            • Size 28KB
            • SHA256 a7cdedaa58c7ba9aba98193fce599598d2cd35ed9c80d1ad7fc9e6182c9a25d5
            • MD5 SHA1 SHA512 SSDEEP

            _socket.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_socket.pyd
            • Size 78KB
            • SHA256 09ab789238120df329956278f68a683210692c9bcccb8cd548c771e7f9711869
            • MD5 SHA1 SHA512 SSDEEP

            _ssl.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_ssl.pyd
            • Size 150KB
            • SHA256 2b16154826a417c41cda72190b0cbcf0c05c6e6fe44bf06e680a407138402c01
            • MD5 SHA1 SHA512 SSDEEP

            _uuid.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\_uuid.pyd
            • Size 22KB
            • SHA256 cb195b5aae6a7969174e8c7c6f9e2b40683190f6b4e410233022df1b6dade731
            • MD5 SHA1 SHA512 SSDEEP

            base_library.zip

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\base_library.zip
            • Size 822KB
            • SHA256 2c4921453ef057ce597c793a0a229e3107acf015192b779a8f96e35c72eb735f
            • MD5 SHA1 SHA512 SSDEEP

            cacert.pem

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\certifi\cacert.pem
            • Size 292KB
            • SHA256 94edeb66e91774fcae93a05650914e29096259a5c7e871a1f65d461ab5201b47
            • MD5 SHA1 SHA512 SSDEEP

            md.cp39-win_amd64.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\charset_normalizer\md.cp39-win_amd64.pyd
            • Size 10KB
            • SHA256 89268be3cf07b1e3354ddb617cb4fe8d4a37b9a1b474b001db70165ba75cff23
            • MD5 SHA1 SHA512 SSDEEP

            md__mypyc.cp39-win_amd64.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\charset_normalizer\md__mypyc.cp39-win_amd64.pyd
            • Size 117KB
            • SHA256 969196cd7cade4fe63d17cf103b29f14e85246715b1f7558d86e18410db7bbc0
            • MD5 SHA1 SHA512 SSDEEP

            _rust.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\cryptography\hazmat\bindings\_rust.pyd
            • Size 6.9MB
            • SHA256 f20cb01d1d32ffac5877abd9a6acb7babca3f60362b9116d2be57c551c463256
            • MD5 SHA1 SHA512 SSDEEP

            libcrypto-1_1.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\libcrypto-1_1.dll
            • Size 3.2MB
            • SHA256 594303e2ce6a4a02439054c84592791bf4ab0b7c12e9bbdb4b040e27251521f1
            • MD5 SHA1 SHA512 SSDEEP

            libffi-7.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\libffi-7.dll
            • Size 32KB
            • SHA256 f60dd9f2fcbd495674dfc1555effb710eb081fc7d4cae5fa58c438ab50405081
            • MD5 SHA1 SHA512 SSDEEP

            libssl-1_1.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\libssl-1_1.dll
            • Size 673KB
            • SHA256 9d4cf1c03629f92662fc8d7e3f1094a7fc93cb41634994464b853df8036af843
            • MD5 SHA1 SHA512 SSDEEP

            open.txt

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\open.txt
            • Size 35B
            • SHA256 a282de189279ddaa714c982fd20157ad9f8c7952aaac7f128d3b73a9a1563a03
            • MD5 SHA1 SHA512

            pyexpat.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\pyexpat.pyd
            • Size 185KB
            • SHA256 2d59ddb10d0fa2516da1e879d2b3f180272160a4325f705d4e71ed21b90438b8
            • MD5 SHA1 SHA512 SSDEEP

            python3.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\python3.dll
            • Size 58KB
            • SHA256 e9e4a9b271b692c331dc091825ac1ff51b01cd159f2e5c2553756c79ff272fa2
            • MD5 SHA1 SHA512 SSDEEP

            python39.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\python39.dll
            • Size 4.2MB
            • SHA256 53f27444e1e18cc39bdb733d19111e392769e428b518c0fc0839965b5a5727a2
            • MD5 SHA1 SHA512 SSDEEP

            select.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\select.pyd
            • Size 27KB
            • SHA256 b26b6631d433af5d63b8e7cda221b578e7236c8b34b3cffcf7630f2e83fc8434
            • MD5 SHA1 SHA512 SSDEEP

            unicodedata.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI42402\unicodedata.pyd
            • Size 1.1MB
            • SHA256 9be2b4c7db2c3a05ec3cbd08970e622fcaeb4091a55878df12995f2aeb727e72
            • MD5 SHA1 SHA512 SSDEEP

            __PSScriptPolicyTest_kdmgcfll.fgv.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kdmgcfll.fgv.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512

            mYhF1RjFfY.bat

            • Path C:\Users\Admin\AppData\Local\Temp\mYhF1RjFfY.bat
            • Size 223B
            • SHA256 d81e7c49ec71dbdcfd50d506b418894d1d5be4085cc215e9f914b8b7f3512e97
            • MD5 SHA1 SHA512

            ratteleg.exe

            • Path C:\Users\Admin\AppData\Local\Temp\ratteleg.exe
            • Size 10.7MB
            • SHA256 1743e7bb8857e697c91cbbf2d9b7ae8c083fa4960c60984a053f9c75eb7bbed0
            • MD5 SHA1 SHA512 SSDEEP

            memory/640-145-0x0000027FF4000000-0x0000027FF4022000-memory.dmp

            memory/640-150-0x0000027FF4060000-0x0000027FF4084000-memory.dmp

            memory/640-149-0x0000027FF4060000-0x0000027FF408A000-memory.dmp

            memory/1640-195-0x000000001D320000-0x000000001D370000-memory.dmp

            memory/1640-214-0x000000001D900000-0x000000001DE28000-memory.dmp

            memory/1640-190-0x00000000032A0000-0x00000000032C6000-memory.dmp

            memory/1640-192-0x0000000003220000-0x000000000322E000-memory.dmp

            memory/1640-194-0x00000000032E0000-0x00000000032FC000-memory.dmp

            memory/1640-236-0x000000001D700000-0x000000001D74E000-memory.dmp

            memory/1640-197-0x0000000003270000-0x0000000003280000-memory.dmp

            memory/1640-199-0x0000000003310000-0x0000000003328000-memory.dmp

            memory/1640-201-0x0000000003280000-0x0000000003290000-memory.dmp

            memory/1640-203-0x0000000003290000-0x00000000032A0000-memory.dmp

            memory/1640-205-0x0000000003330000-0x000000000333E000-memory.dmp

            memory/1640-207-0x0000000003360000-0x0000000003372000-memory.dmp

            memory/1640-209-0x0000000003340000-0x0000000003350000-memory.dmp

            memory/1640-211-0x000000001D390000-0x000000001D3A6000-memory.dmp

            memory/1640-213-0x000000001D3B0000-0x000000001D3C2000-memory.dmp

            memory/1640-188-0x0000000000DC0000-0x0000000001150000-memory.dmp

            memory/1640-216-0x0000000003350000-0x000000000335E000-memory.dmp

            memory/1640-218-0x0000000003380000-0x0000000003390000-memory.dmp

            memory/1640-220-0x000000001D370000-0x000000001D380000-memory.dmp

            memory/1640-222-0x000000001D430000-0x000000001D48A000-memory.dmp

            memory/1640-224-0x000000001D380000-0x000000001D38E000-memory.dmp

            memory/1640-226-0x000000001D3D0000-0x000000001D3E0000-memory.dmp

            memory/1640-228-0x000000001D3E0000-0x000000001D3EE000-memory.dmp

            memory/1640-230-0x000000001D3F0000-0x000000001D3F8000-memory.dmp

            memory/1640-232-0x000000001D690000-0x000000001D6A8000-memory.dmp

            memory/1640-234-0x000000001D400000-0x000000001D40C000-memory.dmp

            memory/3816-181-0x0000000000400000-0x0000000000433000-memory.dmp

            memory/3988-281-0x000000001CD10000-0x000000001CD18000-memory.dmp

            memory/3988-280-0x000000001D0B0000-0x000000001D11B000-memory.dmp

            memory/5100-83-0x0000000000400000-0x0000000001294000-memory.dmp